Work-positioning means



Filed June 21, 1952 s l|l @x Patented Feb. 20, 1934 UNITED STATES PATENT QFFICE WORK-POSITIONING MEANS Application June 21, 1932. Serial No. 618,498

13 Claims.

This invention relates to means for positioning work for operations upon it, it being herein disclosed in connection with the attachment of heels to shoes.

I A heel-attaching machine is provided with a jack, upon which are supported the shoes to be heeled, and associated with this jack there is com monly a back-stop or gaging device, by which the jacked shoe is located with reference to the heel which is to receive and to the mechanism which is to insert the attaching nails. The jack, for convenience in operation, is made movable from a work receiving position to a nailing position, and it is a well-known practice to make the back-stop movable and to connect it to the jack. By this means, when tie jack is in the work-receiving position, the back-stop may be shifted to leave the way clear for the loading of the nails into the die-block; and when the jack is brought into 30 preliminary cooperation with the nailing mechanism, the back-stop may move to meet and cate the shoe for nailing. In this last-"mentioned position, the jack and back-stop are separated from the die-block and swing-plate or like nailing and heel-presenting el ments; and, to enable the operator to better determine the correct relation of the heel seat of the shoe to the heel held upon the swing-plate, the jack has been made with an end-section carrying the las pin and capable of being slid upon the body of the jack. Thus, at such times as when the pitch of the heel being attached changes, the work-portions may be brought together by movement of the end-section, and the heel-seat caused to register with the heel, whereupon the back-stop or jack may be adjusted to correspond to this. When praiminary or measuring pressure is applied, the body of the jack is moved while the end-section remains at rest, and this restores the jack to its normal condition. As the end-section of the jack is first shifted upon the body, the jacked shoe leaves the back-stop, making it difficult to determine the extent to which the elements should be adjusted. Moreover, with certain forms of backstop, as that known as a band-clamp, in which a sheet-metal counter-engaging portion has an incurved edge to enter the rand-crease of the shoe being operated upon, relative movement between this edge and the shoe-upper may mar the latter.

It is a purpose of my invention to avoid such relative movement of the back-stop and shoe, and, when once engagement between them has been effected, to maintain this undisturbed until the heeling operation has been completed, and

positioning member, means made effective by the 50 relative movement of the support-portions for governing the movement of the positioning member. This means may be controlled by the workreceiving portion of the jack during its movement upon the main portion, and may be associated with connections to said main portion for moving the positioning member. In the application of the invention to heel-attaching machines, as shown herein, with a jack-post having a movable end-section and a co-operating movable back-stop there is associated governing means for the back-stop under the control of the end-section, such governing means preferably including a flexible member, as a chain, connecting the jaclr-post and back-stop, a guide, appearing as a sprocket-wheel over which the flexible member passes, and means controlled by the end-section of the jack-post for governing the position of the guide. In the particular embodiment of the invention disclosed, this governing action is exercised by mounting the guide upon a lever and moving the lever, and with it the guide, under the influence of the end-section of the jack-post. The result of this combination is that, when the work is moved by shifting this end-section upon the main portion, the controlling influence upon the positioning member or back-stop will cause the latter to travel with the work, facilitating adjustment for heels of different pitch, andeliminatihg relative movement between the backstop and upper so said upper may not be marred. This control, it should be observed, is exercised as an incident to another act performed by the operator.

In the accompanying drawing appears one of several forms which my invention may assume. In this drawing,

Fig. 1 shows my improved positioning means in side-elevation, with parts in section; while Fig. 2 is a sectional detail on the line IL-II of Fig. 1.

The heel-attaching machine to which this invention is applied may be that of Letters Patent of the United States No. 1,157,688, Glidden, October 26, 1915. Of this machine, there is illustrated in the drawing a portion of its die-block 10 forming a part of the nail-driving mechanism and with which a heeland top-lift-holder 12 is associated. Movable toward and from the dieblock is a vertical work-spindle 14 terminating in a cross-head 15, upon which is adjustable a horizontal slide 16. Pivoted at 18 upon this slide is a jack-post J having a main or body-portion 20 and a terminal work-receiving portion 22. This portion 22 carries 9. depending pin 24 to enter the thimble of a last L bearing a shoe S to be heeled. The jack-post is movable upon its pivotal mounting from a forwardly inclined position, in which the work is applied to the pin 24, to that shown in Fig. 1, in which the jack-post is approximately vertical and is alined with the die-blockopenings. The heel-seat of the shoe 8 is now caused to register with a heel H presented over the die-block by the holder 12.

To enable the operator, before starting the operation of the machine, to bring the heel-seat of the shoe into close proximity to the heel, to more exactly determine the correct relation between them, the end-section 22 of the jack is movably mounted upon the body 20. To permit this movement, the section 22 has extending from it into a bore in the body a spindle 28. When the opposed surfaces 30, of the postsections are in contact, releasably held by a latch 32, the effect is as though the post were a unitary member. But when the work-spindle 14 is still raised, before the preliminary pressure is applied, the operator may release the latch and lower the section 22 until the heel-seat of the jacked shoe rests upon the heel in the holder.

Mounted to turn about the pivot 18 of the jackpost is a hooked arm 34. From this arm a chain 36 passes over a sprocket-wheel 38 rotatable beneath the slide 16, and is joined to the upper extremity of a slide 40 movable in vertical ways 42 formed in a member 44 carried upon the frame of the machine. Mounted upon the lower extremity of the slide 40 is a back-stop B, which assists the operator in correctly locating the jacked shoe above the die-block. A screw 26, threaded through the jack-post and contacting with the arm 34, acts to elevate the slide when the post is swung forward, said slide descending under the influence of gravity. By turning the screw, the normal relation betweenthe back-stop and the jacked shoe may be altered. In the present instance, the work-engaging portion of the back-stop B consists of a curved sheet-metal band or clamp 46, generally following the con tour of portions of the counter of a shoe and provided with a lower edge arranged to enter the rand-crease of a shoe presented to it. When the jack is swung up to its work-receiving relation, the arm 34, moving with it, draws upon the chain 36 and lifts the back-stop B so it will not interfere with the transfer of nails to the die-block. After the shoe has been jacked and the post J carried down to a vertical position, the removal of tension upon the chain allows the back-stop B to fall, so it meets the shoe, and the lower edge of the band 46 enters the rand-crease, determining to a considerable extent the relation of the heel-seat to the heel both from front to rear and laterally. At this time, the heel seat is somewhat elevated above the heel, the surfaces 30, 30 of the jack-sections 20 and 22 being in contact, this contact being maintained by the latch 32. In absence of my invention, if the operator wished to bring the heel-seat down upon the heel by unlatching the jack-section 22, as to more accurately ascertain the relation between the heel-seat and the heel, the edge of the band 46, remaining raised with the section 20, would tend to scrape the rear of the shoe-upper moving past it. Then, when the jack-spindle 14 was lowered to apply preliminary pressure to the work, a sim ilar eifect would be produced by the downward travel of the clamp with the section 20. During these movements, the locating influence of the back-stop would have been in part lost. Then too, the jacked shoe and the band-clamp are so separated in the lowered position of the former that satisfactory pitch-adjustments are difficult.

To prevent causing the relative movements of the work and back-stop as just indicated, instead of mounting the sprocket-wheel 38 directly upon the slide 16, as has been customary, it is rotatable upon the inner extremity of a substantially horizontal arm 50 of a bell-crank-lever Z fulcrumed at 52 upon the slide 16. A downwardly and forwardly extending arm 54 of the lever has a 1ongitudinally curved flange 56 projecting from one side and overhanging a roll 58 rotatable upon a slide 60 movable in vertical ways 62 in the jack-body. Below the ways 62, the jack is cut away at 64, and into this space projects an angular extension 68 from the slide 60.

The action of my improved positioning means is as follows: Assuming that a shoe S has been jacked and the post 5 swung into its vertical position over the die-block, the rand-crease of the shoe will have been brought into engagement with the band 46, as already described. During the operations up to this point, the jack-sections 20 and 22 will have been latched together at 32, acting as would an integral post. The roll 58 is held against downward displacement by the contact of its slide 60 with the upper end of the spindle 28, and, during the swinging of the jack, will have traveled along the curved surface of the flange 56, retaining the lever L against downward movement about its fulcrum. The effect of the jack-arm 34 upon the back-stop B therefore will have been as in previous organizations. When the operator releases the latch 32 and pulls down the terminal section 22 of the jack upon the body-portion 20 to better locate the work, the end of the spindle 28 moves away from the slide 60. The weight of the chain 36, slide 40 and backstop B turns the lever Z clockwise, so the leverarm 54 and slide 60 follow the spindle. The leverarm 50 and the sprocket-wheel 38 consequently drop, allowing the chain and back-stop to move down at the same rate as the jack-section 22 and the supported shoe. As a result of this, the enllO gagement between the shoe and band 46 of the back-stop is continuous. Upon the lowering of the work-spindle 14 for the application of the preliminary pressure, the jack-sections are restored to their former relation and latched because of the descent of the section 20. Sincethe slide 60 at this time is held against movement by the spindle 28 because of the contact of the heel-seat of the shoe S with the heel H, the lever Z, lowered with the spindle and cross-head, is pressed against the roll 58 until, in the latched relation of the sections, said lever is restored to normal. After final pressure has been applied, the nails driven and the pressure released, the jack is swung out and the heeled shoe removed therefrom. The elements are now ready for the succeeding operation.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. The combination with a work-support having portions movable relatively to each other, of a movable work-positioning member co-operating with the support, and means made effective by the relative movement of the support-portions for governing the movement of the positioning member.

2. The combination with a work-support having a main portion and a work-receiving portion movable upon the main portion, of a movable work-positioning member co-operating with the support, and means arranged to cause the movement together of the work-receiving portion upon the main portion of the support and of the workpositioning member.

3. The combination with a work-support having a main portion and a Work-receiving portion movable upon the main portion, of a movable work-positioning member co-operating with the support, and means controlled by the Work-receiving portion of the support during its movement upon the main portion for governing the movement of the work-positioning member.

4. The combination with a movable work-support having a main portion and a work-receiving portion movable upon the main portion, of a movable work-positioning member oo-operating with the support, connections to the main portion of the support for moving the work-positioning member, and means controlled by the work-receiving portion of the support during its movement upon the main portion for governing the movement of the work-positioning member.

5. The combination with a work-support having a main portion and a work-receiving portion movable upon the main portion, of a movable Work-positioning member co-operating with the support, a member connecting the main portion of the support to the positioning member, a movable guide for the connecting member, and means actuated by the work-receiving portion of the support in its movement upon the main portion for governing the movement of the guide,

6. The combination with a jack-post having an endsection movable thereon, of a movable backstop co-operating with the jack-post, and means controlled by the end-section in its movement upon the jack-post for governing the movement of the back-stop.

7. The combination with a jack-post having an end-section movable thereon, of a movable back-stop co-operating with the jack-post, and means arranged to cause the movement of the back-stop upon movement of the end-section upon the jack-post.

8. The combination with a jack-post having an end-section slidable upon the post, of a back-stop guided for movement adjacent to the jack-post, a member movable under the influence of the end-section, and connections to the back-stop acted upon by the member as it slides upon the jack-post.

9. The combination with a pivoted jack-post having an end-section slidable thereon, a back stop arranged to move adjacent to the jack-post. a flexible member connecting the jack-post and back-stop, a guide over which the flexible member passes, and means controlled by the end-section in its movement upon the jack-post for governing the position of the guide.

10. In a heel-attaching machine, a reciprocatory cross-head, a jack-post pivoted thereon, a back-stop arranged to move adjacent to the jackpost, a flexible member connecting the jack-post and back-stop, a lever fulcrumed upon the crosshead, a wheel rotatable upon the lever and over which the flexible member passes, and means carried by the jack-post for moving the lever.

11. In a heel-attaching machine, a reciprocatory cross-head, a jack-post pivoted thereon and having a slidable end-section, a back-stop arranged to move adjacent to the jack-post, a flexible member connecting the jack-post and backstop, a lever fulcrumed upon the cross-head, a wheel rotatable upon the lever and over which the flexible member passes, and a member movable upon the jack-post under the influence of the end-section and acting upon the lever.

12. In a heel-attaching machine, a reciprocatory cross-head, a jack-post pivoted thereon and having a slidable end-section, a back-stop arranged to move adjacent to the jack-post, a fiexible member connecting the jack-post and backstop, a lever fulcrumed upon the cross-head and provided with a curved portion, a wheel rotatable upon the lever and over which the flexible member passes, and a slide movable upon the jackpost under the influence of the end-section and contacting with the curved portion of the lever.

13. In a heel-attaching machine, a reciprocatory cross-head, a jack-post pivoted thereon and having a slidable end-section, a back-stop arranged to slide adjacent to the jack-post, a lever fulorumed upon the crosshead, a sprocket-wheel rotatable upon the lever, a chain joining the jackpost and back-stop and passing over the sprocketwheel, and a slide movable upon the jack-post under the influence of the end-section and contacting with the lever.

JOHN F. STANDISH. 

